Quote:
Originally Posted by InFlight
I really haven't figured out any real advantage to thunder-hex for teams that already have a lathe and can custom machine any shaft that they might need. Vex does sell 13.75 mm bearing to go with the thunder shaft however.
If you have a local source for hex shaft (preferably 0.500 Inch) for compatibility with Vex/AM parts, it would be trivial to machine that down to .500 round or any metric size smaller that you want to use for bearings.
We have an on-line metals warehouse nearby, and simply pickup all our hex shaft there.
Comment- 6061 is fine for most shafting. We normally use 7075 as its it's yield strength is much better (73Ksi vs 40Ksi).
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My understanding is the ThunderHex was designed for teams who don't have access to a lathe (or don't want to invest the time on that project).